from tkinter import *
import random

class Parois:
def __init__(self, canvas, positionx):
self.positionx = positionx
self.positiony = 10
self.canvas = canvas
self.maParois = self.canvas.create_rectangle (self.positionx,
self.positiony,
self.positionx + 20,
self.positiony + 280,
fill = "blue")
def detectCollision(self, balle):
if (((balle.positionx + 50 == self.positionx) and
(self.positionx == 280)) or
((balle.positionx == self.positionx + 20) and
(self.positionx == 20))):
balle.vx = -balle.vx



class Balle:
def __init__(self, canvas):
self.positionx = random.randint(50,200)
self.positiony = random.randint(50,200)
self.vx = random.randint(-1,1)
self.vy = random.randint(-1,1)
if (self.vy == 0 and self.vx == 0):
self.vx = -1
self.canvas = canvas
self.maBalle = self.canvas.create_oval(self.positionx,
self.positiony,
self.positionx+50,
self.positiony+50,
fill="red" )

def bouge(self):
self.positionx += self.vx
self.positiony += self.vy
self.canvas.move(self.maBalle, self.vx,
self.vy)

def creeBalle():
mesBalles.append(Balle(myCanvas))

def myLoop ():
for b in mesBalles:
b.bouge()
maParois1.detectCollision(b)
maParois2.detectCollision(b)
fen.after(1,myLoop)

fen = Tk()

myCanvas = Canvas(fen, width=300, height=300)
mesBalles = []
monBouton = Button(fen, text="Cree Balle",
command=creeBalle)
maParois1 = Parois(myCanvas, 20)
maParois2 = Parois(myCanvas, 280)
monBouton.pack()
myCanvas.pack()
myLoop()
fen.mainloop()